Part 1 of 3

Injector Coil Test Procedure:

Example:

CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This is the set-up for performing the injector coil test. Also read instructions included with tools used for test.
2. Engine coolant temperature affects the tool's ability to detect a faulty injector. If engine coolant temperature is NOT between 10°C and 95°C (50°F and 195°F) the comparison chart (Part 2 of 3) must be used.
3. The first second of the voltage reading may be inaccurate due to initial current surge, therefore, record the lowest voltage displayed after the first second of test. The voltage reading should he within range (see example). The voltage reading may increase throughout the test as the injector windings warm and the resistance changes. An erratic voltage reading (one that jumps up and down) indicates an intermittent connection within the fuel injector.
4. To check the mechanical (fuel delivery) portion of the fuel injector, perform an injector balance test.